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Re: Are dinosaurs really reptiles? (2)
K and T Dykes writes:
All living reptiles (including birds), have armoured scales on their skin
composed of both keratin alpha and keratin beta. If I'm wrong about that,
I'll doubtlessly be corrected. I don't have those scales. And nor do or
did any synapsid, as far as I'm aware. In this regard, my skin is
amphibian-like, and distinct from reptiles. While some living synapsids,
eg mice, indeed have scales on their tails, those don't contain keratin
beta. They're soft. I know of no evidence whatsoever that we synapsids
ever had reptilian scales.
So pangolin scales were completely re-evolved?
GIS / Archaeologist http://geo_cities.com/dannsdinosaurs
Melbourne, Australia http://heretichides.soffiles.com